Part one of this series will start by covering best practices for line set testing, addressing refrigerant leaks and refrigerant line insulation. This session will focus on how efficient heat pump output relies on both refrigerant charge and total system airflow including: improving the airflow in existing systems, measuring and estimating airflow, and adjusting the airflow settings on various types of equipment.

Agenda:

• Introductions and safety message
• Line set testing using high pressure nitrogen
• Line set testing and cleaning using a vacuum pump
• Finding and repairing leaks in refrigerant lines
• Refrigerant line insulation
• The interrelated nature of refrigerant volume and airflow volume
• Airflow and heat pump performance
• Targets for system airflow per ton
• Where are the system airflow settings found
• Communicating controls vs legacy controls
• How do you verify that the air handler is operating the way you set it
• How to measure air flow
• How to measure static pressure
• How to measure air handler power
• How to interpret static pressure and power
• Most common install mistakes that cause low airflow systems
• Most cost-effective ways to raise system airflow
• Commissioning advantages multi stage equipment
• Summary and Q&A

The objective of this course is that at the conclusion, participants will be able to:

• Describe techniques for effectively testing line sets
• Verbalize pressure and vacuum targets for line set testing
• Identify how efficient heat pump output relies on both refrigerant charge and total system airflow
• Present strategies for improving the airflow in existing systems
• Name techniques for measuring and estimating airflow
• Describe how to change the airflow settings on various types of equipment